Or is it round 3 now? It's hard to keep track of Butamax's and Gevo's back and forth bio-isobutanol lawsuit these days.
Gevo announced today that the the US Patent and Trademark Office (PTO) granted the company two patents on bio-isobutanol production. Gevo also filed a lawsuit against Butamax and its parent company DuPont of allegedly infringing Gevo's newly-issued patents.
Gevo said the lawsuit is based on Butamax's own publications describing their use of the technology that Gevo claimed to have invented first and now received the patents.
Gevo's patent 8,017,375, “Yeast Organism Producing Isobutanol at a High Yield” (PDC patent) focuses on the modification of yeast to produce isobutanol instead of ethanol. Patent 8,017,376, “Methods of Increasing Dihydroxy Acid Dehydratase Activity to Improve Production of Fuels, Chemicals, and Amino Acids” (“AFT Patent”) covers enzymatic steps on isobutanol production from yeast.
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